M24LR64E-R datasheet(89/140 Pages) STMICROELECTRONICS

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M24LR64E-R

Command codes

Doc ID 022712 Rev 3

89/140

Response parameter:

●

Error code as Error_flag is set:

–

0Fh: error with no information given

–

10h: the specified block is not available

–

15h: the specified block is read-protected

When configured in the RF busy mode, the RF WIP/BUSY pin is tied to 0 from the SOF that

starts the Read Multiple Block command to the end of the M24LR64E-R response.

When configured in the RF write in progress mode, the RF WIP/BUSY pin remains in high-Z

state.

26.6

Select

When receiving the Select command:

●

If the UID is equal to its own UID, the M24LR64E-R enters or stays in the Selected

state and sends a response.

●

If the UID does not match its own UID, the selected M24LR64E-R returns to the Ready

state and does not send a response.

The M24LR64E-R answers an error code only if the UID is equal to its own UID. If not, no

response is generated. If an error occurs, the M24LR64E-R remains in its current state.

Request parameter:

●

UID

Table 50.

Read Multiple Block response format when Error_flag is set

Response SOF

Response_flags

Error code

CRC16

Response EOF

8 bits

16 bits

Figure 58.

Read Multiple Block frame exchange between VCD and M24LR64E-R

VCD

SOF

Read Multiple

Block request

EOF

M24LR64E-R

<-t1-> SOF

Read Multiple

Block response

EOF

Table 51.

Select request format

Request

SOF

Request_

flags

Select

UID

CRC16

Request

EOF

8 bits

25h

64 bits

16 bits

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